CENTCOM counts 400 transits a week through Hormuz; a tracker counts two in a day
Both numbers describe the same waterway on nearly the same dates, and both come from interested parties. Neither can be audited, and the gap between them is the most honest thing available about the strait today.
JINSA’s Iran War Update for 17–19 October reports that CENTCOM Commander Adm. Brad Cooper said in a video statement on 16 October that US forces had enabled the transit of 400 commercial vessels through the Strait of Hormuz over the previous week — roughly 57 a day — and that CENTCOM reported on 17 October having redirected 138 vessels attempting to bypass the naval blockade reimposed on 14 July. The tracker straits.live, updated at 2005Z on 19 October and counting Day 233 since closure began, describes the strait as “effectively” closed to commercial shipping, records two ships transiting on 11 October against roughly 85 per day in normal conditions, and posts Brent at $109.40. JINSA is a Washington pro-Israel think tank; straits.live is an aggregator. The two sets cannot both be true as stated. Plausible reconciliations include different definitions of a transit — escorted convoy movement versus independent commercial call — different geographic cut-offs, or advocacy on one or both sides. This desk cannot resolve it.
The violence underneath the numbers is better attested than the numbers themselves. Al Jazeera, reporting from Tehran on 17 October, counted at least 12 ships attacked in or near the strait in the week ending 16 October, two of them struck with naval mines, with Washington and Tehran each claiming control of the waterway. On 18 or 19 October — the accounts differ — the IRGC Navy said an oil tanker struck a mine in the southern strait, caught fire and exploded. AND Magazine’s 19 October brief dates the strike to Sunday and says the vessel had disabled its tracking systems while on an unauthorised route; JINSA dates the IRGC allegation to 17 October. No account gives a vessel name, flag, operator or casualty figure, and CENTCOM has not confirmed the ship’s identity or the cause of the fire. The frame was set on 9 October, when the IRGC said it had struck the engine room of the tanker MV Sun Shine and warned, per Euronews, that it would pursue and “punish” vessels on routes it deems unauthorised anywhere in the region.
Oil prices are no cleaner. For the single trading day of 19 October, Brent was reported at a $107.84 settle on the LCOZ6 contract by Investing.com, at $107.8 by an Indian retail brokerage attributing the fall to a reported US waiver of Russia sanctions, at $109.21 by Trading Economics on a CFD, at $110.10 as of 9 a.m. Eastern by Fortune, and at $109.40 by straits.live. The spread is wider than most intraday moves. The least timing-sensitive figure is Trading Economics' year-on-year change on Brent: up 79.00 percent as of 19 October. For scale, the same chronology that records Brent closing January 2026 at $70.69 shows it falling to $67.55 on 5 February after the US and Iran agreed to talks.
Assessment: When a blockade becomes a statistics war, the measurement is the weapon. Cooper’s 400 and the tracker’s two are not simply a dispute about reality; they are bids to define what counts as a functioning strait, because insurers, charterers and Gulf energy ministries price off whichever definition sticks. Read the IRGC’s mine claim the same way: “unauthorised route” and “disabled AIS” are Tehran’s legal scaffolding for a doctrine it announced on 9 October, not findings. The most reliable signal today is not any single figure but the five-dollar Brent spread across five sources for one session — the market itself cannot agree what it is looking at.